/Engine/Source/Runtime/GeometryCore/Public/Spatial/BlockedDenseGrid3.h
Pre-allocate the grid blocks that also exist in SourceGrid of the same dimensions. This is useful in grid-processing algorithms where parallel grid operations can be done without locking if the blocks are already allocated.
false on failure (e.g. different sized grids), otherwise true.
template<typename OtherElemType> bool PreAllocateFromSourceGrid ( const [TBasicBlockedDenseGrid3](API\Runtime\GeometryCore\Spatial\TBasicBlockedDenseGrid3)< OtherElemType, BlockSize > & SourceGrid )